Aspect Ratio Guide

Understanding aspect ratios is essential for professional image work. This guide explains when and why to use each ratio.

Aspect Ratio Guide

Understanding aspect ratios is essential for professional image work. This guide explains when and why to use each ratio.

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Common Aspect Ratios

1:1

1:1 Square

Perfect for social grids, profile images, and balanced compositions. The most versatile ratio.

Best For

•Instagram posts
•Profile pictures
•Product thumbnails

1080×1080512×512256×256

4:5

4:5 Portrait

Maximizes vertical space in feeds while maintaining good balance. Instagram's preferred portrait ratio.

Best For

•Instagram feed posts
•Product shots
•Portrait photography

1080×1350800×1000

16:9

16:9 Widescreen

The modern video standard. Used for YouTube, presentations, and HD displays.

Best For

•YouTube thumbnails
•Video content
•Presentations

1920×10801280×7202560×1440

9:16

9:16 Vertical

The mobile-first format for stories, reels, and short-form video.

Best For

•Instagram Stories
•TikTok
•Reels

1080×1920

3:2

3:2 Photography

Classic 35mm photography ratio. Natural for landscapes and prints.

Best For

•Photography
•4×6 prints
•Portfolio work

1800×12003000×2000

2:3

2:3 Portrait

Vertical counterpart of 3:2. Great for portraits and posters.

Best For

•Portrait photography
•Posters
•Book covers

1200×18002000×3000

4:3

4:3 Standard

Classic display ratio. Good for presentations and tablets.

Best For

•Presentations
•iPad content
•Documentation

1600×12001024×768

21:9

21:9 Ultrawide

Cinematic format for dramatic banners and immersive headers.

Best For

•Website banners
•Cinematic headers
•Panoramic shots

2560×10803440×1440

Quick Reference

Ratio	Name	Best For	Common Sizes
1:1	1:1 Square	Instagram posts, Profile pictures	1080×1080, 512×512, 256×256
4:5	4:5 Portrait	Instagram feed posts, Product shots	1080×1350, 800×1000
16:9	16:9 Widescreen	YouTube thumbnails, Video content	1920×1080, 1280×720, 2560×1440
9:16	9:16 Vertical	Instagram Stories, TikTok	1080×1920
3:2	3:2 Photography	Photography, 4×6 prints	1800×1200, 3000×2000
2:3	2:3 Portrait	Portrait photography, Posters	1200×1800, 2000×3000
4:3	4:3 Standard	Presentations, iPad content	1600×1200, 1024×768
21:9	21:9 Ultrawide	Website banners, Cinematic headers	2560×1080, 3440×1440

Try Different Ratios

Upload an image and experiment with different aspect ratios.

Start with a single image

PNG, JPG, or WebP up to 50MP processed privately on device.

⌘/Ctrl+V to paste from clipboard

EXIF orientation automatically respected.

Export

Quality

Estimated size: -

40%90%100%

Export pixelsFollow crop & preset

Use the crop size from your preset; no extra resampling.

💡 ⌘/Ctrl+E 快速导出📐 Output size: —

FAQ

Which aspect ratio should I use for social media?+

It depends on the platform. Use 1:1 for Instagram grid posts, 4:5 for maximum feed visibility, 9:16 for stories/reels, and 16:9 for YouTube thumbnails.

What's the difference between 16:9 and 9:16?+

16:9 is horizontal (widescreen), while 9:16 is vertical (mobile/stories). They're the same ratio rotated 90 degrees.

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